AuxiliaryViews

AuxiliaryViews - 6 'Auxiliary Views Objects are not always...

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6 'Auxiliary Views Objects are not always designed so that all of their principle faces are parallel to the regular planes of projection. Some pieces have an in- clined* surface(s) that do not show in their true size and shape in a principle view. As a result, the surface will appear foreshortened (smaller) from its actual shape unless the observer looks in a direction perpendicular to the inclined surface. Any print must show a complete shape descrip- tion of the main surfaces for comprehension and dimensioning purposes. . Pieces that have normal and inclined surfaces require that the inclined surfaces be shown by the means of an auxiliary (extra) view(s). Figure 6.1 shows the true size and shape of an inclined or angular surface as it would appearifthe observer was looking perpendicular to that surface; that is, the viewer's line of sight is at right angles to the inclined surface. An auxiliary view is obtained by projecting the outline ofthe inclined surface onto the auxiliary plane of projection that is parallel to the surface. Partial Auxiliary Views Most auxiliaries used on prints are partial aux- iliary views. A partial auxiliary shows only the outline or actual contour of the inclined surface.
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AuxiliaryViews - 6 'Auxiliary Views Objects are not always...

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